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JOHN HASELTINE, OF WARREN, NEW HAMPSHIRE.

Letters Patent Na. 67,760, dated August 13, 1867.

IMPROVED COMPOSITION FOR STUPFING LEATHER BELTS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOHN HASELTINE, of Warren, in the county of Grafton,and State of New Hampshire, have invented a new and improved Compositionfor Stufiing the Leather Belts which are used for driving machinery andfor-rendering such belts more adhesive; and hereby declare that thefollowing is a full, clear, and exact description of the method ofcompounding and using the same, and the proportions of the ingredients,specimens of.which, as also of the composition, accompany thisapplication.

Recent experiments have demonstrated that the leather belts which areused for driving machinery will endure much longer and perform betterservice if that portion or side of the belt next the pulleys, or thesurface of such leather, and for a short distance in, is filled orstufi'ed with some suitable substance which will make the leather limberand pliable, and at the same time as adhesive as possible. It is alsoimportant that when once prepared, such belts should retain theirpliable and adhesive character for a long time.

To accomplish all this the composition used for stuffing or preparingthe leather or the belt should contain certain peculiar properties forpreserving and softening the leather, and for attracting or drawingmoisture from the surrounding atmosphere, as well as for making the beltadhesive, as that portion or property which attracts the moisture aidsmaterially in maintaining and preserving the adhesive property of thecomposition.

In preparing my improved composition for stuffing and rendering leatherbelts adhesive, I take as a base for said composition, and for a certainquantity, about one gallon of soap in a. semi-liquid state, say aboutthe consistency of common soft soap. To this I add about two pounds offatty oil or grease, placing the same in a suitable vessel over a slowfire or moderate heat, and stir or agitate till well mixed together. Ithen add about one pint of common tar, known as North Carolina orWilmington tar. I also add about one-half pint of common salt, stirringor agitating till the whole mass is well mixed or incorporated, when thecomposition is ready for use, or it may be allowed to cool before beingused.

This composition may be applied to the belt with a brush or a cloth, orwith the hand, and well worked into the leather. The effect of thisimproved'composition is as follows: The alkali in the soap has atendency to soften the leather, the grease contained in the soap and thegrease or fatty oil added tend also to soften and to preserve theleather. The tar will remain on the surface and render the-leather orbelt adhesive, and the salt is partly absorbed by the leather, but mostof the salt is retained on the surface, and with the tar the saltattracts or draws moisture from the surrounding atmosphere and keeps thecomposition and the surface of the belt in an adhesive condition for avery great length of time.

It has been generally supposed that soap has an injurious eii'ect uponleather, but I find it otherwise, and when combined with otheringredients, as above stated, the composition is very beneficial to theleather, as it keeps it soft, limber, and pliable, and prevents otherand injurious substances or matter which may come in contact with thebelt from having any injurious eflect upon it.

Soap may be made for the base of my improved composition with more thanthe ordinary quantity of grease, and such soap made to serve the purposeof the soap and grease or fatty oil above named, but, as will be readilyseen, such soap would be of no use for other purposes, as soap isdesigned for removing grease from textile fabrics or other substances.

Having fully described my invention, its nature, effect, and the methodof compounding, what I claim as of my invention, and desige to secure byLetters Patent, is-

I claim the combination of the ingredients above named, in about theproportions specified, using as a base for my composition thefirst-named ingredient.

JOHN HASELTINE.

Witnesses:

Joan E. CRANE, J. S. WHITNEY.

